<template>
    <div>
        <div class="search">
            <input class="search-input" type="text" placeholder="输入城市名或拼音" v-model="keyword" />
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" v-for="item of list" :key="item.id"
                    @click="handleCityClick(item.name)">
                    {{ item.name }}
                </li>
                <li class="search-item border-bottom" v-show="hasNoData">
                    没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>
  
<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data() {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    computed: {
        hasNoData() {
            return !this.list.length
        }
    },
    watch: {
        keyword() {
            if (this.timer) {
                clearTimeout(this.timer)
            }
            if (!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
                            result.push(value)
                        }
                    })
                }
                this.list = result
            }, 100)
        }
    },
    methods: {
        handleCityClick(city) {
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
    mounted() {
        this.scroll = new Bscroll(this.$refs.search, {
            click: true
        })
    }
}
</script>
  
<style lang="less" scoped>
@import '~@/assets/styles/varibles.less';

.search {
    height: .72rem;
    padding: 0 .1rem;
    background: @bc;
}

.search-input {
    box-sizing: border-box;
    width: 100%;
    height: .62rem;
    padding: 0 .1rem;
    line-height: .62rem;
    text-align: center;
    border-radius: .06rem;
    color: #666;
}

.search-content {
    z-index: 1;
    overflow: hidden;
    position: absolute;
    top: 1.58rem;
    left: 0;
    right: 0;
    bottom: 0;
    background: #eee;
}

.search-item {
    line-height: .62rem;
    padding-left: .2rem;
    background: #fff;
    color: #666;
}
</style>
  